I need to obtain an SSB receiver suitable for receiving WEFAX and RTTY (as
well as audio weather transmissions) with an output which I can use to input
to a PC running something like JVFAX. I know nothing at all about this sort
of radio reception, but anticipate some problems with any sort of
sophisticated unit as I need to use this on a boat cruising in UK, Europe
and Med.

Would I be better off with portable, battery powered receiver - or installed
RTX with backstay antenna etc.? And can you suggest/recommend make/models
appropriate to your advice?